Phonograph



Feb. l, 1938. J. A. VOLK 2,106,778

PHONOGRAPH Filed Dec. l0, 1931 ,ay MMWW Patented Feb. 1, 1938 tructomandi arrangement of parts hereinafter more fullyfdescribed andlclaimed, and illustrated n the accompanying drawing, in which- Eigure. 1I asldeelevational view of' my imle showing the phonograph spin- 5 ion elat'esv`v ygenerallyltophono-ev graphsijandp {moreparticularly*fto jthe turn-table or record` supporting and 1 E actuatin'gfqrjner'nber,` thereof.: 'Heret'ofdre r phonograph-records have been 'madejfto operate.'or*rotate/fateJ spe f about seventy-eight ,l revolutionsv @perK minut v y the' driving4 t mechanism fofk i the;4 phonograph 'been arrangeditopimpart'this speedto eturn tablengr'lhe-newf improvedgph grap t are madevfto heacwatedatl perd ,of about rms ,invert kY in l'figure4 Va topiplan view of my improved turntabl partly broken away.

y Figuref isfan enlarged vertical cross section taken orfline 3-i-3 ofiFigure 2. l0 t Figure ibis-a horizontal cross section taken on thirty-threel ev utionsrper lillel'llj/ly-fSily kd(Il "Cannot n the'old lirieiI-"lP-'off-'Figure13; M A phonograp y yneiyd' l Figure ia top plan .view of the roller carryu ringsi A t f f IReferring by-numeralsto the accompanying 15 drawingyglllg.zindcatesaspindle of a phonograph andrvl I'tgagturn-tableor supporting the phonof graph Precords.V 'yl'hespindle' is of usual constructionrbeingtaperedupwardly and being actuated bythelgphonographf driving mechanism in the 20 Charig'feaar'e EXP ofransxreriencedi af and iii-s antiori offspei It isftheprmary Vpbjectof inyzirive'ritiongtoEpy 20 vide animproved turn-'tablewhichgcan bzplaceJ N in psiiti'ono'n the ordinary phonograph 11,111,296 y of the fold turn-ltablexand; which op fat' thirty-eight;f revoiutiqns.g from, the .spina the machineiwhchfoperates Aeve ght 25 olutions. l

Other. bjects of` uslizial;mannerE r`The{turn-table* H is of usual size D pperfacve'provided with a suitable Y, M ab ic ZTupO'nf-which the records are placed 1n ithe usualinanner. The turn-table is nbts'upport'edl'directl'yby the spindle and is pro- 25 vid d 'wit'h'-ay central opening I4 which is slightly llaigerftl'ia'n theupperend of the spindle so as to "p'royide-i Aclearance f therebetween.

'gi''he undersidelofthe turn-table is provided ywithasupport,or.ri g `l5 having its lupper end 36 'formed:witlripagnoutwardlyl and horizontally pro- A'and ,.operated;1 3o respectfthret, W'herefrgyl usedy i injunction rwith the fold st ro j rsofthenverftiorgfareitopme jjemgmangeJqtqwhich isvse'cured thel tumyide ablefor "phongiaphsgwhichturn- 1table lin n 'suitahl manner, such as by screws l5 is provided d inwardly disposed flange 35 A y upwardly'tapering bore 2l! disp tliejspindle l0. The upper y Qfext'e dsthrough the central openy arige 'I S'fandl terminates preferably stance'aloovefthe upper face thereof. 40 end `rof kfs'aid hub extends downwardly table' ha perarively f associated therewith-mecha 35 anisrn'ngagablewithafspindle mi; the phonograph whereby f the'l i 'revoluble f moti'p' spindleSi nis transmitted i to taai t' ducedgsypeed: VFurthera`olo3ects-fo A 40 a ti'irnetalolei ffor:A phpno'g table thaslxeid theret ate `independently of said y 1s Earranged concentrically by said?spindleqatreduceds uh I9` and is provided with With.:thsefarilhuthrjopj 1n *l A, t V Y spsed coaxally with the 5@ventiorrfchsistsdncertainnoyelfe ures oflzo d receives the spindle 55 "n 0h said hub I9 so that 50' Meshing with said pinion 24 are the internally disposed teeth 21 -of a ring gear 28. 'Ihis ring Sear is disposed eccentrically to said pinion 24 and is provided with external gear teeth 29 which mesh with internally disposed gear yteeth 30 formed integral with or xed to ring I5. Ring gear 28 is supported on flange I8 in any suitable manner and rotates around the axis of spindle I Il. This ring gear 28 is held in its proper operative position in any suitable manner, preferably by a plurality of rollers 3| which are revolubly mounted by means of trunnions 32 in a pair of carrying rings 34. These rings are eccentrically dispod and are arranged to each side of pinion 24. The inner or reduced'ends 35 of said rings loosely engage the reduced ends 24a of pinion 24. The outer ends 38 of rings 34 are arranged adjacent to the internal gear teeth of ring 28 and receive trunnions 32 of said rollers. These rollers engage the inner face or gear teeth of said ring at a plurality of spaced points and maintain said ring in mesh with pinion 24 and with ring I5 and at the same time permit rotating movement of saidvring gear around its own axis. The outer end of the lower ring 34 is preferably supported on flange I8 in any suitable manner, such as projections 31.

'I'he gear mechanism just described forms reduction drive between the spindle actuated pinion 24 and turn-table Il whereby the latter is actuated by said spindle at reduced speed and in` thesame direction as said spindle. 'I'hus said turn-table can be used to support and operate new phonograph-records requiring low speeds on phonographs, the driving mechanism of which voperates at .old or high speed. As the entire transmission mechanism is supported on the un-4 derside of the turn-table the old phonographs can be readily converted or adapted to play new phonograph-disks or records merely by replacing the old turn-table with my improved one.

1. In a phonograph turn-table construction, the combination of a hub adapted to be placed upon and have non-rotative Aengagement with a spindle of a phonograph, a support revolubly mounted on said hub, a turn-table carried by said support, and means arranged in said support for operative association of said hub with said turntable whereby the latter is operated by said phonograph spindle at differential speed with respect thereto.

2. Ina device of the class described, the combination of a turn-table, a support iixed to the underside thereof, a hub revolubly mounted in said support concentrically with said turn-table.'

said hub being provided with a bore for receiving a spindle oiV a phonograph drive mechanism whereby said turn-table is supported on said spindle and is revoluble independently thereof, and means within said support operatively connecting said hub and said turn-table for actuating the latter from said spindle at a different speed with respect thereto.

3. In a device of the class described, the combination. of a turn-table, a 7support xed to the underside thereof, a hub member revolubly mounted in said support concentrically with said turn-table, said hub member being provided with a bore for receiving a spindle of a phonograph driving mechanism whereby said turn-table is supported on saidspindle and is revoluble independently thereof, a pinion conjoined with said hub member, an internal gear iixed to said support, and a ring gear provided with internal and external gears, one of which meshes with said pinion and the other with the first-mentioned internal gear whereby motion is transmitted from said spindle to said turn-table.

4. In a device of the class described, the combination of a hub member adapted to be supported on and have operative engagement with a spindle of a phonograph Idriving mechanism, a support revolubly carried by said hub, a turntable ilxed to said support concentrically with said hub member, and reduction gearing interposed between said hub member and said support and enclosed within said support for actuating the latter and said turn-table by said spindle at reduced speed with respect thereto and in the same direction as said spindle.

5. In a phonograph, the combination with the driving mechanism thereof, including a vertically disposed revoluble spindle, of a hub member' detachably supported by and in operative engagement with said spindle. a horizontally disposed turn-table, means for revolubly supporting said turn-table on said hub member, and mechanism operativelyA associated with said turn-table and- 

